Chevrolet C-Series Pickup Luggage Compartment Bulb Size

Chevrolet C-Series Pickup luggage compartment bulb specifications include 921, 912, and 1142 bulb sizes across various model configurations. The replacement chart covers vehicle production data spanning 1985 to 2000.

The year-by-year compatibility chart below provides a quick reference to verify the correct bulb size for your vehicle.

Bulb Size by Year Range

If US Type and EU Type show the same value, a direct cross-reference for this bulb is not available or the data is insufficient.

Years	US Type	EU Type	Shop
1999-2000	921	W16W	Check Price
1993-1998	912	W16W	Check Price
1985-1986	1142	1142	Check Price

Bulb Specifications

Description	Type	Shop
ANSI standard (US & Canada). Wedge bulb (T15). 12V, 16W.	921	Check Price
ANSI standard (US & Canada). Wedge bulb (T15). Variant of 921. 12V, 12W.	912	Check Price
ANSI standard (US & Canada). Dual-filament bulb with BAY15d bayonet base. Variant of 1157. 12V, 21/5W.	1142	Check Price

Other Locations

Additional Notes

The Chevrolet C-Series Pickup uses three distinct luggage compartment bulb types across its model years: the 921, 912, and 1142, all of which conform to ANSI standards recognized in both the United States and Canada.
The 912 bulb is the most frequently specified type, covering the 1993-1998 model years. It is a T15 wedge bulb rated at 12V and 12W, and it is classified as a variant of the 921.
The 921 bulb, used in the 1999-2000 model years, shares the same T15 wedge form factor as the 912 but draws more power at 16W versus the 912's 12W. Despite their physical similarity, the wattage difference means the two are not identical replacements for one another.
The 1142 bulb, specified for the 1985-1986 model years, differs fundamentally from the 912 and 921 in both construction and base type. It uses a BAY15d bayonet base rather than a wedge mount, making it physically incompatible with sockets designed for T15 wedge bulbs.
The 1142 is a dual-filament bulb rated at 12V with a 21/5W output, meaning it carries two separate filaments operating at different wattages. It is classified as a variant of the 1157 bulb family.
Because the 1142 uses a bayonet base and the 912 and 921 use wedge bases, no interchangeability exists between the bulb type used in the 1985-1986 years and those used in the 1993-2000 years without socket modification.